Nationals outfielder Bryce Harper fall awkwardly on his left knee during the first game of Thursday's doubleheader against the Mets. As a result, he might not be able to play in the second half of the days' two-game tilt, according to the Washington Times. Harper went 1 for 4 in the game and was lifted for a pinch-runner after his eighth inning single.
Harper has played in 21 of 22 games in the month of July since returning from the disabled list with a left knee injury.